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Chemical EOR Methods Quiz

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Questions and Answers

What is the primary purpose of injecting polymer into the reservoir?

To decrease the mobility ratio
To increase water production
To reduce water production by increasing its viscosity (correct)
To improve the sweep efficiency

What is the advantage of controlling mobility ratio in polymer flooding?

Flow pattern control (correct)
Increasing oil production
Improving sweep efficiency
Reducing water production

What is the significance of water injection after polymer injection?

To create an oil bank
To increase oil production
To improve the sweep efficiency (correct)
To reduce the mobility ratio

What is a disadvantage of not using polymer injection in EOR?

Less swept area due to reservoir heterogeneity (A) Signup and view all the answers

What is another name for Alkaline-Surfactant-Polymer flooding?

ASP Flooding (C) Signup and view all the answers

What is the primary mechanism of polymer flooding?

Increasing water viscosity (B) Signup and view all the answers

What is the purpose of injecting a polymer slug behind the alkaline solution in the alkaline flooding process?

To control mobility ratio (D) Signup and view all the answers

What is the role of water injection in the alkaline flooding process?

To improve sweep efficiency (B) Signup and view all the answers

What is one of the advantages of alkaline flooding compared to other chemical EOR methods?

Lower cost (D) Signup and view all the answers

What is one of the disadvantages of alkaline flooding?

Degradation of alkaline in high reservoir temperature (A) Signup and view all the answers

What is one of the conditions required for alkaline flooding to be effective?

High acid content in oil reservoir (D) Signup and view all the answers

What is the mechanism of ASP flooding?

Alkaline-Surfactant-Polymer (B) Signup and view all the answers

What is the main purpose of injecting a mixture containing alkaline, surfactant, and polymer in EOR?

To enhance oil recovery and increase the recovery factor (C) Signup and view all the answers

Which chemical is primarily responsible for reducing the Interfacial Tension (IFT) by producing soaps?

Alkaline (A) Signup and view all the answers

What is the purpose of using polymer in the EOR process?

To control the flow patterns and improve sweep efficiency (D) Signup and view all the answers

What is an advantage of using alkaline, surfactant, and polymer together in EOR?

Reducing Sor to minimum values (D) Signup and view all the answers

Which of the following is a disadvantage of the polymer injection EOR method?

Incompatibility between chemicals in the mixture (C) Signup and view all the answers

Why does the polymer injection EOR method have a very high cost compared to other EOR methods?

Due to the use of ASP, polymer, and water injection (A) Signup and view all the answers

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